{To keep the wolf from the door}, to keep away poverty; to
prevent starvation. See {Wolf}, 3, above. --Tennyson.

{Wolf dog}. (Zo["o]l.)
(a) The mastiff, or shepherd dog, of the Pyrenees,
supposed by some authors to be one of the ancestors of
the St. Bernard dog.
(b) The Irish greyhound, supposed to have been used
formerly by the Danes for chasing wolves.
(c) A dog bred between a dog and a wolf, as the Eskimo
dog.

{Wolf fish} (Zo["o]l.), any one of several species of large,
voracious marine fishes of the genus {Anarrhichas},
especially the common species ({Anarrhichas lupus}) of
Europe and North America. These fishes have large teeth
and powerful jaws. Called also {catfish}, {sea cat}, {sea
wolf}, {stone biter}, and {swinefish}.

{Wolf spider} (Zo["o]l.), any one of numerous species of
running ground spiders belonging to the genus {Lycosa}, or
family {Lycosid[ae]}. These spiders run about rapidly in
search of their prey. Most of them are plain brown or
blackish in color. See Illust. in App.